Puzzles are randomly generated so an unlimited supply of puzzles are available.
Cross Math Puzzles are a great for elementary students to practice their math skills.   The app provides five different types of problems.  The first level uses sums for whole numbers from 1 to 9.  At level two a mix of addition and subtraction problems are presented.  Level three involves multiplication of numbers from 1 to 9. When level four is selected, addition problems for numbers between -4 and +4. At level five addition and subtraction problems for integers between -4 and +4 are presented.
Speech and sound effects make using Cross Math Puzzles fun for kids. A scoreboard keeps track of how many puzzles the student has solved.